Back rest for a chair



FIG. 1 is a perspective view showing the front and left side of a backrest for a chair which forms my new design, the broken lines in this andother figures showing other parts of a chair being for illustrativepurposes only and forming no part of my design;

FIG. 2 is a front elevational view thereof; and,

FIG. 3 is a left side elevational view thereof, this view and theopposite right side elevational view being mirror images.

The short broken lines on the back rest in FIGS. 1–3 are understood torepresent stitching.

The ornamental design for a back rest for a chair, as shown anddescribed.